Maps and List are the bread and butter of any Java program, but sometimes you need to creating a map that associates one key to multiple values and end up creating a Map> or similar. If you’ve ever needed that sort of collection, Guava has you covered with its Multimap. Guava’s Multimap is designed to represent a map where for one key there is a collection of values. There are two main variants (subinterfaces) of Multimaps: ListMultimap, which acts as if the collection is a List (meaning ...
